Masayuki Hagiya

Title: **Masayuki Hagiya: Pioneering Innovations in Electric Double-Layer Capacitors**

Introduction

Masayuki Hagiya, a distinguished inventor based in Tokyo, Japan, has made significant contributions to the field of energy storage technology. With a total of two patents to his name, Hagiya's work focuses on electric double-layer capacitors, which are crucial for enhancing energy efficiency and storage capacity in various applications.

Latest Patents

Hagiya's latest patents include an innovative design for an electric double-layer capacitor and a current collector specifically tailored for this capacitor. The first patent involves a novel electric double-layer capacitor comprising an electrolyte solution featuring γ-butyrolactone as the solvent, which contributes to the enhanced performance of the capacitor. The coated electrode produced in this design utilizes a water-based solvent, employing a slurry that combines an electrode material with an elastomer, enabling the capacitor to maintain low internal resistance despite prolonged exposure to high temperatures.

The second patent introduces a polarizable electrode for electric double-layer capacitors, which boasts exceptional storage characteristics at elevated temperatures. This design effectively prevents a decrease in electrostatic capacity and minimizes the increase in internal resistance. The electrode is created by mixing Ketjen black, active charcoal, and a polytetrafluoroethylene (PTFE) aqueous solution. An etched aluminum foil serves as the current collector, treated with phosphoric acid or other phosphate solutions to optimize its surface characteristics for enhanced performance.

Career Highlights

Hagiya currently works with Nippon Chemi-con Corporation, where his research and development efforts are driving advancements in capacitor technology. His expertise and innovative approach have established him as a recognized figure within the industry, contributing to the growth and improvement of energy storage solutions.

Collaborations

Throughout his career, Hagiya has collaborated with notable colleagues, including Shin Watanabe and Naoya Nishina. Their collective efforts in innovation and research have further propelled advancements within their field, fostering development that benefits both the industry and consumers.

Conclusion

Masayuki Hagiya is a notable inventor whose work in the area of electric double-layer capacitors represents significant strides in energy storage technology. His patents demonstrate a commitment to innovation, enhancing the efficiency and performance of capacitors, which are critical for various modern applications. As he continues to collaborate with peers at Nippon Chemi-con Corporation, Hagiya's contributions are likely to pave the way for further breakthroughs in the energy sector.